Abstract Medium voltage shunt capacitor banks (SCBs) are widely used for improving voltage profile and providing reactive power in electrical networks. Transient oscillations caused by SCBs, e.g., switching and self-excitation phenomena, may damage sensitive equipment in electrical networks. This paper provides an analytical description of the SCB transients and proposes efficient techniques to limit such transients, which include (i) determining the proper size of the SCB to minimum the risk of the self-excitation, (ii) detecting and preventing the SCB self-excitation using a novel protection scheme, and (iii) limiting the SCB switching transients by developing some approaches for medium voltage application. The proposed strategies for limiting SCB transients are verified using comprehensive simulation studies conducted on an actual power system.

中文翻译：

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并联电容器组：瞬态问题和分析解决方案

摘要 中压并联电容器组 (SCB) 被广泛用于改善电网中的电压分布和提供无功功率。由 SCB 引起的瞬态振荡，例如开关和自激现象，可能会损坏电网中的敏感设备。本文提供了 SCB 瞬变的分析描述，并提出了限制此类瞬变的有效技术，其中包括 (i) 确定 SCB 的适当尺寸以最小化自激风险，(ii) 检测和防止 SCB 自激- 使用新颖的保护方案进行激励，以及 (iii) 通过开发一些用于中压应用的方法来限制 SCB 开关瞬变。使用在实际电力系统上进行的综合仿真研究来验证用于限制 SCB 瞬变的建议策略。